Carbureting device for explosion-engines.



Patented Mar. 25, I902.

GARBUBETING DEVICE FOR EXPLOSION ENGINES.

(Application filed. Jan. 12, 1991.)

(No Model.)

-J L J,

TVi'in/esses Kw? z wmt flitarney,

TH! mam: prrzns cu. PHGTO LITHOWASHINGTDN. D. c,

situated relatively to the UNITED STATES PATENT OFFICE.

JOSEPH FILLET, OF NEUILLY-SUR-SEINE, FRANCE.

CARBURETING DEVICE FOR EXPLOSION-ENGINES.

SPECIFICATION forming part of Letters Patent No. 696,231, dated March25, 1902. Application filed January 12. 1901. Serial No. 42,975. (Nomodel.)

To aZl whom it nay concern:

Be it known thatI, JOSEPH FILLET, a citizen of the French Republic,residing in Neuillycur-Seine, France, have invented certain Improvementsin Oarbureting Devices for Explosion-Engines, of which the following isa specification.

This invention relates to devices for vaporizinga liquid hydrocarbon byheat from the exhausted gases from the engine and to mixing with the hotvapor air which has also been heated by the said gases, the object being to carburet the air.

One important object and feature of the invention is the employment ofan upright vaporizing-coil communicating at its lower end with asupply-reservoir for the liquid hydrocarbon used, this reservoir beingso level of the vaporizing-coil and being provided with meanscontrolling the delivery of the liquid to said coil that only the lowerportion of the coil will be filled with the liquid, the upper partthereof serving as a vaporizing-chamber.

In the accompanying drawings, which serve to illustrate my invention,Figure l is a vertical axial section of the device. Fig. 2 is ahorizontal section in the plane indicated by line A B in Fig. 1. Fig. 3is a horizontal section at line C D in Fig. 1. Fig. at is a horizontalsection of the liquid-delivery chamber at E F in Fig. 1. Fig. 5 is anenlarged axial section of the vaporizer-outlet, and Fig. (5 is across-section of same at G H in Fig. 5.

At the left in Fig. 1 is seen the reservoir a for the liquidhydrocarbon, and at the right the vaporizer and carbureter,connectedtherewith by a supply-tube b. This supply-tube communicates with thelower end of an upright vaporizing-coil c, the upper end of which isconnected with an outlet controlled by a conical valve 19, Fig. 5,having a screw-threaded stem 1, whereby the valve may be adjusted withrespect to its seat q, said stem having in it longitudinal flutes orgrooves 0 for the passage of the vapor from the coil. The valve 1)delivers the vapor in such a Way as to facilitate carbureting. The coil0 is inclosed in an upright tube d, closed above, and hot exhaust-gasesfrom the engine enter said tube at its lower end by way of a gas-inlet6. They flow up and about the coil 0, pass out throughoutlet-aperturesfinto-a jacket-space e about the tube cl, formedexteriorly by a tubular jacket g, exterior to the tube d, and thence upto outlets h in an outer inclosing casing J. Thusthe hot gases of theexhaust heat the vaporizing-coil thoroughly and vaporize the hydrocarbontherein. Air to be carbureted is drawn into the casing J at an airinlet11 and flows up through the annular airjacket g and through outlets jtherefrom into a mixing-chamber 7c, which contains the Vapor-outletcontrolled by the valve 19. In this chamber the heated air iscarbureted, and the mixture passes to the engine by way of the outlet Zthrough suitable strainers 7n, situated between the chamber 7.:and'outlet Z. When the engine is started and before there are any hotproducts of combustion to eifect vaporization of the hydrocarbon, someform of primary heater or starter is required to get the engine underway. Two means are pro vided for this purpose, either of which may beemployed as occasion requires. A pipen is provided to supply a veryvolatile hydrocarbon in vapor to the vaporizer-outlet just back of thecontrolling-valve p. This device will serve to carburet air drawn in bythe engine at starting, the supply of the volatile hydrocarbon beingcutoff as soon as the vaporizing-coil c is sufficiently heated by theexhausted gases from the explosion. In this case the coil 1: is notprimarily heated. In the other device for starting the engine the coil 0is heated primarily. This device comprises a cup device s to containsome very volatile hydrocarbon, as alcohol. This cup is supported underthe coil at u, so that it may be swung around horizontally to affordaccess for filling. The receptacle for the alcohol has an annular space'1; about it for the admission of air for combustion from below, and theairinlet is controlled by a valve 00, mounted on the sore -threaded stemof the cup, so that it may serve to regulate the quantity of airadmitted.

In order to assure the constant level of the liquid hydrocarbon in thelower whirls of the coil 0 as itis gradually vaporized by the heat andcarried off, the reservoir a is provided with a device for maintainingthe said level. The reservoir 0 is closed at the top and has below itsbottom a delivery-chamber w. A

pipe t connects this chamber with the reservoir a, and another pipe yconnects it with the atmosphere. A third pipe or tube .2 extends fromthe desired level of the liquid in the chamber w up above the level oftheliquid in the reservoir ct. The liquid liows into the chamber to fromthe reservoir (.1 through the pipe t until it rises in said chamber highenough to seal the lower end of the pipe 2. When drawn off through thepipe b to an extent sutficient to unseal the lower end of the air-pipe 3air will enter the chamber through the contracted inlet of said pipe 1to supply air to the upper part of the reservoir through the pipe .2,and thus permit the liquid to again flow into the chamber. Thus thelevel of the liquid in the chamber to fluctuates slightly; but owing tothe relativelevels of said chamber and the coil the liquid is preventedfrom rising in coil, asa maximum, higher than the two or three lowermostwhirls thereof.

Having thus described my invention, I claim- 1. In a device for thepurpose specified, the combination with an upright vaporizing-coil,means for supplying a liquid hydrocarbon to the lower whirls only ofsaid coil and maintaining the level of said liquid therein, an uprightair-conduit adjacent to said coil, and a mixing-chamber into which theair and vapor are discharged, of means for heating the airconduit andVaporizer simultaneously with the hot exhaust-gases from the engine,substantially as set forth.

2. In a device for the purpose specified, the

combination with the upright, outer casing J, having outlets h at itsupper part for the exhaust-gases, the inner upright tube d, open at thebottom to receive the exhaust-gases and having outletsf at its top forthe same, the upright annular air-jacket g, said jacket forming thejacket-space e for the exhaustgases and having an inlet below for airand outlets above for the air to the mixing-chamber, the upright coil 0in the tube (1, said. coil having its inlet for hydrocarbon at its lowerend and its discharge-outlet above in the mixing-chamber, the saidmixing-chamber, and means for supplying a liquid hydrocarbon to saidcoil 0 and maintaining the level of same therein, substantially as setforth.

3. A vaporizer and carburetor substantially as described, in combinationwith the reservoir a, the delivery-chamber to under the same, the pipe2, extending from the airspace in the reservoir down into the chamber w,the pipe 25 connecting the reservoir a with the chamber w, the air-pipey, connecting the said chamber with the atmosphere, and the pipe 1),connecting said chamber with the lower end of the vaporizer, therelative levels of the vaporizer and the delivery-chamber beingsubstantially as set forth and for the purpose specified.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

JULEs ARMENGAUD, J eune, J. ALLIsoN BOWEN.

